Elevator-hatch way



(No Model.) 2 Sheets-Sheet 1, L. J. BATES.

ELEVATOR HATGHWAY.

No. 340,755. PatentedApr. 27, 1886.

I In van hr: JZZQS'ZI L ewe '3' 1.3a 2 w.

If WMJM/IW (No Model.)

8. ulnunuaul.

2 Sheets-Sheet 2. L. J. BATES.

ELEVATOR HATGHWAY.

Patented Apr. 27, 1886.

N. PETERS, Phnurulhngrapher. wanmhm D c.

UNITED STATES PATENT ()FFICE.

LEWIS J. BATES, or nnrnorr, MICHIGAN.

ELEVATOR-HATCHWAY..

SPECIFICATION forming part of Letters Patent No. 340,755, dated April 27, 1886.

Application filed January- 14, 1886. Serial No. 188,490. (No model.)

To aZZ whom it may concern.-

Be it known that I, LEWIS J. BATES, of De troit, in the county of \Vayne and State of Michigan, have invented new and useful In1- provements in Elevator-Hatchways; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to certainnew and novel improvements in elevatorhatchway gates; and the invention consists in the peculiar construction and arrangement of devices for automatically opening and closing the gate as the elevator passes up or down in the shaft, substantially as more fully hereinafter set forth.

Heretofore gates for elevator hatchways have been operated by systems of levers and cams, which have been cumbersome in appearance and very liable to get out of repair.

It is the object of this invention to produce a device that will be both simple and economical in point of construction, but that will effectually bar or close the entrance to the elevator-shaft excepting at such times as the elevator shall be opposite such entrance.

Figure 1 is a perspective view of an elevatorhatchway provided with my improved automatic gate. Fig. 2 is a sectional elevation showing position of parts in the act of opening the gate. Fig. 3 is a similar View at right angles to Fig. 2 as in the act of closing-the gate.

In the accompanying drawings, which form a part of this specification, A A represent two floors of a building, through which the elevator-hatchways B are cut, and through which latter the elevator-car O is operated by any of the known mechanisms for that purpose.

Upon three sides of each hatchway (where it is an open one) I erect a fence, D, the remaining side being closed by a gate, E. This gate is arranged to slide vertically in guides F, erected at the corners of the hatchway, as shown in Fig. 2, and the gate is counterbalanced by a weight, G, which is connected to the gate by a suitable cable, H, running over pulleys, substantially as shown, while the weight slides in the guide-box I.

J is a spring secured to the inner face or side of the gate E, and is designed to engage with a stop or lug, K, on the corresponding side of the elevator-car in opening the gate, and is disengaged therefrom by coming in contact with the rod L.

Upon the weight G is secured a spring, M, designed to engage with the lug N on the ele vator, and to be disengaged therefrom by contact with the stop 0 on the guide-box I.

In practice, with the gate closed, as shown in Fig. 1, as the elevatorcar rises, the lug K on the car engages with the spring J on the gate, and in its upward travel carries the gate with it. If the elevator is stopped at this hatchway, the gate is retained in this open position, resting upon the lug K, and if the elevator returns to its original position below, the gate, slightly overbalancing the weight, follows down until it rests upon the floor. If, however, the elevator-car continues upward, the spring J comes in contact with the rod L, which disengages it from the lug. At this point there will be a slight drop of the gate till the spring M, attached to the weight G, comes in contact with the lug N on the car, which prevents the gate closing any faster than the elevator rises. In the return of the elevator the gate is raised by the lugN engaging with the spring M, thereby pushing the weight downward and drawing the gate up, this movement continuing till the spring M is released by the stop 0. At this point the spring J of the gate rests upon the stops K, and as the elevator descends follows the same down.

While I have shown and described my device as operating a vertically-rising gate, it is obvious that the same may be applied to a sliding or swinging gate without departing from the spirit of my invention.

What I claim as my invention isl. The combination, with an elevator-car having a lug upon one side thereof, of a gate vertically sliding in suitable guides and provided with a spring, and a stationary rod arranged in the path of said spring, such spring engaging with said lug in the upward movement of the car, and thereby raising or opening the gate, substantially as described.

2. The combination, with an elevator-car having a lug upon one side thereof, of a gate vertically sliding in suitable guides and provided with aspring, such spring engaging with said lug in the upward movement of the car,

and thereby opening or raising the gate, with a stop upon the frame-work of the elevator in the path of said spring, which releases the spring from its engagement with said lug, whereby the gate is allowed to descend to its original position, substantially as described.

3. Thecoinbination,withanelevatorear having a lug upon one side thereof, of a gate vertically sliding in suitable guides and provided with a spring of the form shown, such spring engaging with said lug in the upward movement of the car, and thereby opening or raising the gate, with a stop upon the frame-work of the elevator connecting said guides, and which releases the spring from its engagement with said lug, whereby the gate is allowed to descend to its original position, such descent being regulated by a counterbalance-weight, substantially as described.

4. In combination with an elevator-car, 0, the gate E, sliding in vertical guides F, spring J on said gate, lug K on the car, and rod L,

connecting said guides and arranged in the path of the spring J, substantially as and for the purposes set forth.

5. The combination of the elevator G and gate E, )rovided with the counter-weight G, the spring M on said'weight, lug N on the car, and stop 0, arranged in the path of said spring, substantially as and for the purposes described.

6. The combination, with the elevator-car 0, provided with lugs K and N, of the gate E, provided with spring J in the path of the lug K, and the rod L, arranged in the path of the said spring, the cord H, attached at one end to said gate and carrying atits other end aweight, G, provided with spring M, arranged in the path of the lug N, and the stop 0 in the path of the spring M, all substantially as and for the purpose specified.

. LElVlS J. BATES.

Witnesses:

H. S. Srnacnn, EDMOND T. SoULLY. 

